CN110345320B

CN110345320B - Pipe arrangement of a pipe system of a fire-extinguishing system, pipe connector for a pipe arrangement and method for producing a pipe arrangement

Info

Publication number: CN110345320B
Application number: CN201910271369.9A
Authority: CN
Inventors: 克劳斯·霍夫曼; 约阿希姆·伯克
Original assignee: Minimax GmbH and Co KG
Current assignee: Minimax GmbH and Co KG
Priority date: 2018-04-04
Filing date: 2019-04-04
Publication date: 2022-09-30
Anticipated expiration: 2039-04-04
Also published as: DE102018107959A1; CN110345320A; EP3550195B1; EP3550195A1; US20190308047A1

Abstract

The invention relates to a pipe arrangement of a pipe system of a fire-extinguishing system, having pipe sections connected to one another, which conduct a medium, having: a sleeve body having at least a first end section and a second end section; in particular two pipe sections, wherein each pipe section is accommodated at an end section of the sleeve body; and a sealing element arranged between the inner side of the sleeve body and the outer side of the pipe section, wherein a connecting medium arranged between the inner side of the sleeve body and the outer side of the pipe section is provided. According to the invention, it is proposed that the connection means have a transport and/or storage state in which a relative movement between the pipe section and the sleeve body is possible and that the connection means can be brought from the transport and/or storage state into a connection state by means of activation, wherein the connection means are designed in the connection state to connect the outer face of the respective pipe end to the inner side of the sleeve body in a material-fit manner.

Description

Pipe arrangement of a pipe system of a fire-extinguishing installation, pipe connector for a pipe arrangement and method for manufacturing a pipe arrangement

Technical Field

The invention relates to a pipe arrangement of a pipe system of a fire-extinguishing installation, comprising: connected to each other, medium-conducting pipe sections; a sleeve body having at least a first end section and a second end section; two pipe sections, wherein each pipe section is received on one end section of the sleeve body; and a sealing element arranged between the inside of the sleeve body and the outside of the pipe section. The invention also relates to a method for producing a pipe arrangement of two pipes to be connected to each other of a pipe system of a fire-extinguishing system.

Background

For connecting or coupling the lines conducting the medium in the automatic fire extinguishing device, couplings or threaded connections are usually used. By means of such couplings or threaded connections, on the one hand a secure mechanical coupling between the pipelines of the fire-extinguishing system should be brought about and on the other hand an outward seal should be ensured despite the pressure acting inside the pipeline system. In very few cases, extrusion connections are used in addition to the known couplings. In a line system which is composed in sections of plastic pipes, the individual lines can also be connected to one another via welded connections or adhesive connections.

From the prior art, for example, conduit devices are known which have a sleeve body comprising at least a first end section and a second end section and two conduit sections, wherein each conduit section is accommodated in one end section of the sleeve body. Between the inside of the sleeve body and the outside of the pipe sections, sealing elements, in particular elastic sealing elements, are provided, by means of which sealing of the pipe sections to one another or sealing between the outside of the pipe sections and the inside of the sleeve body is brought about.

Such a pipe arrangement is known, for example, from US 5,584,512 a. In the region of the abutment of the two pipe ends, sealing rings are provided, by means of which the pipe ends are in each case in sealing contact with the inside of the sleeve body on the end side and via the pipe outside. Furthermore, an annular groove is provided on the inside of the sleeve, in which a collar is arranged. As the pipe ends are pushed into the sleeve, the collars come into a form-fitting connection with the corresponding annular grooves on the outside of the respective pipe end. Furthermore, an adhesive can be applied to the outside of the pipe end before the pipe end is inserted into the sleeve, said adhesive hardening after being pushed into the sleeve. In order to ensure an effective material fit between the outer face of the pipe end and the inner side of the sleeve, the adhesive face can be cleaned and, if necessary, subjected to further pretreatment steps. This, however, has a negative effect on the installation time of such a pipe connection. Furthermore, the following difficulties arise when gathering the pipe ends into the sleeve body: the connecting medium applied to the outer surface of the pipe end cannot be removed prematurely during the insertion due to the collar placed on the outer surface of the pipe end, as a result of which the applied connecting medium can fail.

Disclosure of Invention

The invention is therefore based on the object of specifying a pipe arrangement and a method for producing a pipe arrangement, by means of which a reduced installation time of the pipe arrangement and, in addition, a high effectiveness of the adhesive connection are achieved.

The object on which the invention is based in a first aspect is achieved in a pipe arrangement with a pipe system of a fire extinguishing installation according to the invention. In particular, a connection medium is provided which is arranged between the inside of the sleeve body and the outside of the pipe section, wherein the connection medium has a transport and/or storage state in which a relative movement between the pipe section and the sleeve body is possible and which can be brought into a connection state by means of an activation of the transport and/or storage state, wherein the connection medium is designed in the connection state to connect the outside of the respective pipe section to the inside of the sleeve body in a material-fit manner.

According to the invention, the current approach to the method is sought in the following way: the connection medium is activated either shortly before or immediately after introduction into the sleeve body in order to be transferred from its transport and/or storage state into its connection state. Thereby realizing that: the adhesive properties of the connecting medium become effective only shortly before or after the pipe section is joined to the sleeve body. For the engagement, the outer face of the pipe section is at least partially in contact with or in contact with the inner face of the sleeve body. Preferably, the pipe section is already provided to the installation site with the connection medium applied to the outside, wherein the connection medium is inactive in its transport and storage state in accordance therewith. Preferably, the connection medium is applied to the pipe section during the production thereof and only passes from its inactive state into its active state when required. In the inactive state, the connection means still do not have the adhesion properties typical for material fitting toward the outside. The inner side is preferably the circumferential side of the inner part of the sleeve body. The outer surface is preferably the outer circumferential surface of the pipe section.

According to a preferred embodiment of the pipe arrangement according to the invention, an adhesive or welded connection is formed between the sleeve body and the pipe section by means of the connecting medium. Gluing or welding is a preferred possibility for producing a material-fit connection between two components to be connected to one another. In addition, a reliable mechanical coupling of the components to be connected (sleeve body and pipe section) and a locking of the components to one another are achieved. After the adhesive or welded connection has been established, relative movement of the pipe sections with respect to the sleeve body is effectively inhibited. In addition to the mechanical stop, a sealing action can be achieved by means of an adhesive or welded connection in addition to the sealing element inserted between the outside of the pipe section and the inside of the sleeve body.

Preferably, the connecting medium is an adhesive or a weldable plastic which is applied to the inner side of the sleeve body and/or to the outer side of the pipe section. One or more sections of the pipe section or of the end section of the sleeve body are provided with adhesive or weldable plastic. Preferably, the connection medium is applied over the entire circumference on the outer face of the pipe section or on the inner side of the sleeve body. In one embodiment, the connecting medium is applied along a section in the longitudinal direction of the pipe section and/or the sleeve body. The section is, for example, approximately one eighth to approximately half of the total length of the plug connection formed between the pipe section and the sleeve body.

According to a preferred embodiment, the bonding medium is a one-component adhesive or a multi-component adhesive, preferably a two-component adhesive. In the case of two-component adhesives, it is preferably provided that one component of the two-component adhesive is arranged on the inner side of the sleeve body and the second component of the two-component adhesive is arranged on the corresponding section at the outer face of the tube section. When the pipe section is mounted on the sleeve body, the two components come into contact with one another and thus initiate activation of the connection means, so that the connection means is transferred from the transport and storage state into the connection state. Preferably, when the components of the two-component adhesive are applied singly to the duct section and the corresponding section of the sleeve body, said components themselves each have only non-adhesive properties.

According to a preferred embodiment of the pipe arrangement according to the invention, the sleeve body is provided on its inner side and on the outer side of the pipe section with a section of the connecting surface running conically. In this way, when the pipe section is engaged in the sleeve body, in particular when the pipe section is pushed into the sleeve body, it is achieved that: the surface regions of the pipe section and the end section of the sleeve body have contact surfaces which bear directly against one another. Preferably, a pressing pressure of a predetermined strength acting on the conically tapering connecting surface can be generated by means of the connecting medium applied at least on one side, thereby improving the adhesion of the connecting medium, which is preferably designed as an adhesive.

Preferably, the sleeve body has a conical connection surface which widens correspondingly towards its end, while the pipe section to be connected to the sleeve body has a connection surface which tapers towards the pipe end.

Preferably, according to a further development, it is provided that the connecting means is covered by a removable protective layer, wherein the protective layer is designed to protect the connecting means in the transport and/or storage state from external influences. By means of the protective layer, the connection medium can be kept in the inactive state as long as necessary.

Furthermore, the protective layer likewise provides effective protection against possible contact with environmental influences which may possibly have an adverse effect on the adhesion forces which can be achieved by means of the connecting medium. In one embodiment of the invention, the protective layer is a protective film which completely surrounds the connection means and thus preferably completely encloses the connection means. If the connection medium has been applied to the pipe section, the protective layer is located on the side facing the sleeve body. If the connecting medium has been introduced into the sleeve body, the protective layer is located on the side facing the pipe section.

In one embodiment of the invention, the protective film is designed to be removed from the connection medium when the pipe section has been pushed into the end section of the sleeve body. This prevents the connecting medium from being accidentally pushed out of its selected position on the pipe section or on the sleeve body when the pipe section is pushed into the sleeve body. The activation of the connection medium is hereby only carried out by pulling off the protective film after the insertion of the pipe section into the end section of the sleeve body. For this purpose, the protective layer preferably has a "label" or a similar structural element which extends away from the connecting medium and the sleeve body and is still accessible from the outside after the pipe section has been inserted into the sleeve body. Appropriately dimensioning the pipe sections and the connecting medium then ensures that: the protective layer can be pulled out at a protruding "label" between the sleeve body and the pipe section in order to activate the connecting medium.

In a preferred embodiment, the removable protective layer is

-is gas-tight and is,

of splash-proof, or

-at least one of a protective layer that is impermeable to UV radiation.

In a preferred embodiment, the connecting means is designed to be converted into the connecting state when the protective layer is removed. In the case of adhesives as connecting means, the adhesive effect is preferably exerted with respect to the respectively opposing component after removal of the protective layer.

According to a preferred embodiment of the invention, the sealing element is arranged in a recess on the inner side of the sleeve body and/or on the outer face of the pipe section. Preferably, the recess is formed like a groove and runs around the entire circumference on the inside of the sleeve body and/or on the outside of the pipe section. The recess forms a kind of receiving space for the sealing element, which preferably forms a sealing region with the oppositely disposed surface of, for example, a pipe section or a sleeve body.

In a preferred refinement of the invention, the inner side of the sleeve body and the outer side of the pipe section delimit a receiving space for receiving a connection medium, wherein an opening corresponding to the receiving space is provided in the sleeve body for supplying the connection medium or an initiator or a component of the connection medium. In one embodiment, when the pipe section is introduced into the sleeve body, the connecting medium flows out of the receiving space into an adjacent surface region, which serves as a connecting region between the pipe and the sleeve body. In a further embodiment of the invention, the connection medium is only subsequently introduced into the receiving space for the connection medium, which is present between the inside of the sleeve body and the outside of the pipe section. The input connection medium is currently referred to as an active connection medium, for example. The receiving space is preferably formed by groove-like recesses on the inner side of the sleeve body and on the outer side of the pipe section, which recesses are arranged congruent in the mounted state of the pipe arrangement. The connection medium is introduced into the receiving space according to the invention via at least one or more injection openings at the sleeve body, via which the connection medium can be applied in a controlled manner into the receiving space.

In a further preferred embodiment of the invention, the connecting means is located as a one-component adhesive in a recess forming the receiving space on the pipe section or the sleeve body. An initiator, for example a radical initiator, UV or thermal radiation, is fed or applied via an opening in the sleeve body corresponding to the receiving space and acts on the connecting medium in order to initiate the hardening of the connecting medium.

Likewise, a two-component adhesive can be used as a connecting medium, the components of which have been introduced into the receiving space beforehand. A second component of the two-component adhesive can then be fed through the opening, which second component reacts with the first component located in the receiving space.

Preferably, the receiving space is connected in a fluid-conducting manner to an adjacent surface region between the inner side and the outer side, whereby the connecting region extends laterally beyond the receiving space for the connecting medium. Preferably, the receiving space for the connecting means forms an annular space which extends all around between the pipe section and the sleeve body.

According to a development of the pipe device according to the invention, a stop element is provided for axially positioning the pipe section relative to the sleeve body. The pipe sections which have been pushed into the end section of the sleeve body are locked or positioned relative to each other by means of a locking element. The stop element is designed to bring about a form fit with the two components as the pipe section is pushed into the sleeve body and reaches the installation location of the pipe section in the sleeve body. Preferably, the stop element is a type of collar which is engageable with an annular groove provided respectively on the outside of the pipe section and on the inside of the sleeve body.

According to a preferred embodiment of the invention, the sleeve body has at least one stop for a pipe section which has been pushed into the sleeve body, wherein the stop is preferably designed as a radially inwardly projecting shoulder on the inside of the sleeve body. The maximum insertion depth of the pipe section to be connected to the sleeve body is limited by means of a stop on the inner side of the sleeve body. Thereby ensuring that: the pipe sections are arranged uniformly, preferably symmetrically, inside the sleeve body. Thereby ensuring a durable and effective seal of the pipe arrangement according to the invention. The stop formed on the inside of the sleeve body is a radially inwardly projecting material flange, the inner diameter of which forms a shoulder. Preferably, the pipe section which has been pushed into the sleeve body strikes blunt with its end against a circular annular stop surface of the shoulder.

Preferably, the connection region formed by means of the connection medium has a distance from the respective end of the pipe section which is greater than the distance of the sealing element from the end of the pipe section. Preferably, the connecting medium is thereby arranged downstream of the respective sealing element in the push-in direction of the pipe section. This brings the following advantages: the connecting medium, when it is applied to the pipe section, is finally pushed into the end section of the sleeve body. The friction acting on the outer side of the applied connecting medium is therefore relatively small due to the surface area of the sleeve body moving relative thereto.

Alternatively, the connection region formed by means of the connection medium preferably has a distance from the respective end of the pipe section which is smaller than the distance of the sealing element from the respective pipe end. Preferably, the connecting medium is thereby arranged upstream of the respective sealing element in the push-in direction of the pipe section. In this embodiment, the sealing element, which is embodied as an elastic sealing element, for example as a circumferential sealing lip, is not in contact with the fluid flowing through the line if the sealing function is likewise fulfilled by means of a material-fit connection, which can be embodied as an adhesive or welded connection. Preferably, the connecting medium arranged upstream of the sealing element at the tube end in the insertion direction is formed by a two-component adhesive, wherein the two components are converted into the active state separately in the inactive state and only by contact with each other. A further embodiment provides that weldable plastic is applied to the respective pipe section in the vicinity of the pipe end, said plastic being liquefied after the pipe end has been pushed into the sleeve body by heating the weldable plastic, so that a material fit between the pipe section and the sleeve body surrounding the pipe section is achieved.

Preferably, the connecting medium has cooling channels extending substantially in the axial direction in the circumferential direction of the pipe section. The connection medium is preferably applied only partially in the circumferential direction of the pipe section, as a result of which only a mechanical coupling between the pipe body and the pipe section accommodated therein is achieved. The sealing function is achieved only via the sealing element. Through the cooling channel, the extinguishing fluid flows in a substantially axial direction towards the sealing element arranged at the end side. The sealing elements arranged on the end face are cooled in the event of a fire by the flowing extinguishing fluid when the fire-extinguishing system is triggered. Thereby, the functionality of the sealing element, which is able to withstand excessive heat generation, in case of fire is improved. Preferably, at least two, three or more mutually separate connecting regions are provided in the respective connecting region in the circumferential direction between the outer face of the pipe section and the inner face of the sleeve body. Preferably, the flow-through channels for the extinguishing fluid are arranged symmetrically about the longitudinal axis of the pipe arrangement.

According to a preferred development of the pipe arrangement, an insulation is provided on the outside of the sleeve body. In particular, at least one region of the sleeve body and the pipe section which is arranged adjacent to the sleeve body is sheathed, in particular by means of a thermal insulation. The area covered by the heat insulation is thus protected from excessive thermal effects or from the damaging effects of fire. In the event of a fire, a high functional safety of the pipe connection is achieved on the basis of material adaptation. The thermal insulation is formed by means of a suitable thermal insulation material, for example a mineral barrier material or a plastic-based material.

The invention relates in a second aspect to a fire-extinguishing system having a line system of a plurality of medium-conducting lines connected to one another in a fluid-conducting manner.

The fire-extinguishing system according to the invention achieves the object described at the outset by: the connecting region of at least two lines connected to one another is formed by means of a pipe arrangement according to the preferred embodiment described above. The invention is based on the following knowledge: a fire-extinguishing system having a plurality of pipe arrangements designed according to the invention for connecting a plurality of pipelines can be installed in a simplified manner. Preferably, plastic pipes or pipes made of metal are used as the pipelines. Furthermore, a high functional safety of the fire-extinguishing system is ensured, the connection region of which has an activatable connecting medium by means of which at least a mechanical coupling of the components of the pipeline arrangement to be connected to one another is achieved. According to a preferred embodiment of the invention, the sleeve body can be designed as a cylindrical sleeve body, the end sections of which are arranged coaxially for connecting the pipe sections. However, the sleeve body can also have an angled orientation of the end sections. The longitudinal axes of the end sections can be oriented at an angle in the range between 1 ° and 89 °, for example, in such a way that they extend toward one another. Instead of two end sections for connection to the respective pipe section, the sleeve body can also be designed as a T-connection or X-connection, by means of which three or more pipe ends of the pipe system of the fire-extinguishing system are connected to one another in a medium-conducting manner.

Advantages and preferred embodiments according to the first aspect are both advantages and preferred embodiments of the second aspect, and reference may therefore be made to the above-described embodiments in order to avoid repetition.

The invention is described above in relation to a pipe arrangement and a fire fighting installation. In a third aspect the invention relates to the pipe connector itself.

The invention relates to a pipe connection for a pipe device of a pipe system of a fire-extinguishing system, having pipe sections connected to one another, which conduct a medium, wherein the pipe connection has a sleeve body having at least one first end section for receiving a first pipe section of the pipe device and a second end section for receiving a second pipe section of the pipe device, wherein the sleeve body has an inner side on which a sealing element is arranged, wherein a connecting medium is arranged on the inner side of the sleeve body, which connecting medium is designed for connection to an outer face of a respective pipe section, wherein the connecting medium has a transport and/or storage state in which a relative movement between the pipe section and the sleeve body is possible and which connecting medium is designed for, by means of activation, the transport and/or storage state is converted into a connection state in which the connection means connects the outer face of the respective pipe section to the inner face of the sleeve body in a material-fitting manner.

The advantages and preferred embodiments of the pipe arrangement and the fire extinguishing system of the first and second aspects are both advantages and preferred embodiments of the pipe connector, and reference may therefore be made to the above-described embodiments in order to avoid repetition.

In a preferred embodiment of the pipe connector, the connecting medium is a one-component or multi-component adhesive, in particular a two-component adhesive.

In the case of a two-component adhesive, preferably one component of the two-component adhesive is arranged on the inner side of the sleeve body and the second component of the two-component adhesive is arranged on the outer side of the respective tube section which is to be inserted into the tube connector, see the above-described embodiments relating to the tube arrangement. When the pipe section is mounted on the sleeve body, the two components come into contact with one another and thus initiate the activation of the connection means, so that the connection means is converted from the transport and storage state into the connection state.

Preferably, the components of the two-component adhesive, when applied individually to the pipe section and the corresponding section of the sleeve body, each have only non-adhesive properties in themselves.

Alternatively or additionally, the components of the connection medium are each covered by a protective film, which is formed in particular according to one of the above-described preferred embodiments.

The invention relates according to a fourth aspect to a method for producing a pipe arrangement of two pipes to be connected to each other of a pipe system of a fire-extinguishing installation. The conduit means is preferably constructed in accordance with one of the previously described preferred embodiments of the first, second and third aspects.

The method according to the invention likewise achieves the object described at the outset by means of the following steps: providing two pipe sections to be connected to one another and a sleeve body for receiving the pipe sections in sections; engaging the pipe segment with the sleeve body; and before or after the joining, activating a connecting medium arranged on the inside of the sleeve body and/or on the outside of the pipe section; and the connection medium is transferred from the transport and/or storage state into the connection state, such that the inner side of the sleeve body is connected to the outer side of the pipe section at least in some regions by means of the activated connection medium in a material-fitting manner. By means of the method steps according to the invention, it is provided, in particular, to activate the connection means applied to the outer portion of the pipe section or to the inner portion of the sleeve body in such a way that the connection means only acquires its adhesion force shortly before or shortly after the pipe section is introduced into the sleeve body. The connection means is thereby switched from its inactive state, in which it does not exert an adhesive force on the oppositely situated connection surfaces, into a state in which the connection means applied to the outside of the pipe section and/or the inside of the sleeve body can now establish an adhesive force with respect to the adjacent connection surfaces of the oppositely situated component.

A preferred development of the method according to the invention provides the following steps: after the pipe section has been joined to the sleeve body, the pipe section and the sleeve body are fixed relative to one another until an at least partially material-fit connection between the inside of the sleeve body and the outside of the pipe section occurs. Preferably, the pipe section and the sleeve body are fixed relative to one another before or immediately after activation of the connecting medium. According to one embodiment, the pipe section and the sleeve body are fixed relative to one another as long as the connecting medium is still liquid, or until an at least partially material-fit connection has occurred between the inside of the sleeve body and the outside of the pipe section. Preferably, the fixing is performed with a fixing device which fastens the sleeve body in axial direction and/or in circumferential direction of the outer face of the pipe section with respect to the at least one pipe section.

According to a preferred embodiment, the method according to the invention has one, more or all of the following steps for activating the connection medium before or after the connection of the pipe section to the sleeve body: a) removing the protective layer covering the connecting medium; b) generating heat at the connecting medium such that the connecting medium liquefies and is subsequently cooled to solidify the connecting medium; and c) introducing a connecting medium or an initiator or a component of the connecting medium into the receiving space for receiving the connecting medium via an opening corresponding to the receiving space, which is formed between the inside of the sleeve body and the outside of the pipe section.

For activation, a protective layer, for example a protective film, is either removed at the connection means, in particular adhesive, for example applied to the pipe ends of the pipe sections. In an alternative embodiment, the weldable plastic which has been applied to the pipe end of the pipe section is liquefied after joining of the pipe section to the sleeve body by the introduction of heat into the region located at the sleeve body, so that the liquefied plastic is connected to the previously unconnected inner side of the sleeve body, for example. The liquefied plastic then cools down again, as a result of which a permanent, firm connection between the pipe section and the sleeve body is produced. In a further alternative embodiment, the one-component adhesive or the initiator for the one-component adhesive or a component of the two-component adhesive is introduced into the receiving space formed between the inner side of the sleeve body and the outer side of the pipe section via an opening, for example an injection opening, in a region of the sleeve body. Preferably, the connecting medium introduced into the receiving space is in full circumferential contact with the inside of the sleeve body and the outside of the pipe section and hardens in the receiving space. The initiator introduced through the opening is brought into contact with the connecting medium already located in the receiving space, or the second component of the two-component adhesive is brought into contact with the first component of the two-component adhesive already located in the receiving space. As initiators for the one-component adhesive, for example, free-radical initiators, UV or thermal radiation are used to harden the connecting medium.

The preferred embodiments or modifications described in relation to the pipe arrangement according to the invention are likewise preferred embodiments of the fire-extinguishing system according to the invention and of the method according to the invention for producing a pipe arrangement.

According to a further aspect, the invention also relates to a system for pipe installation with a pipe arrangement according to one of the above-described preferred embodiments and a device for fixing at least one pipe section and a sleeve body to be connected to the pipe section. The system according to the invention achieves the object described at the outset also in the following manner: the fastening device has at least one fastening means acting on the pipe section and the sleeve body, which fastening means are designed to fasten the pipe section and the sleeve body to one another at least temporarily in the axial direction and/or in the circumferential direction of the inner and outer sides of the pipe section and the sleeve body facing one another.

By means of the device for fixing, the pipe section and the sleeve body to be connected to the pipe section can be temporarily fastened to one another in the axial direction and/or in the circumferential direction of their inner and outer faces facing one another until an at least partially material-fit connection occurs between the inner face of the sleeve body and the outer face of the pipe section. As a result, undesired relative movements of the pipe section and the sleeve body with respect to one another are resisted when a material fit occurs, for example when the connecting medium hardens or cures. Establishing such a material-fit connection at the above-mentioned pipe arrangement can be carried out at the installation site. In this case, the installer does not need to fix the pipe section and the sleeve body to one another by hand until a material fit between the components occurs. This can shorten the installation time and can achieve an increased strength of the connection between the components to be joined together in a material-locking manner.

According to a preferred refinement, it is provided that the fastening means is designed as a clamping device which is designed to apply a clamping force to the outer face of the sleeve body and to the inner side of the pipe section which is arranged substantially congruent to the outer face of the sleeve body, or to the mutually opposite outer faces of the sleeve body. Preferably, the surfaces of the components to be fastened to one another bear directly against one another. In a preferred embodiment of the invention, the fastening means embodied as a clamping device is a pliers having jaws connected to one another via a joint, which can be connected in an effective manner from one side to the region of the component to be fastened. Preferably, the clamping device has a locking unit, by means of which the jaws can be locked to one another in order to maintain a predetermined clamping force. This makes it possible to generate and maintain a clamping action via the clamping device without the clamping device having to be continuously actively operated by hand.

An alternative embodiment of the invention provides that the fastening means has a tensioning element, preferably a tensioning chain, which can be laid around the outer circumference of the sleeve body, wherein a tensioning device, which can vary the tensioning length of the tensioning element, is associated with the tensioning element, and wherein at least one stop element is provided along the tensioning element, which stop element penetrates the sleeve body at least partially in the thickness direction as the tensioning device is tensioned and acts on the outside of the pipe section. Instead of a friction-fit connection purely based on force fitting for fixing the pipe section and the sleeve body relative to one another, provision is made for: by means of this embodiment of the fixing device according to the invention, the stop element is preferably in contact with the outside of the pipe section. The one or more stop elements are preferably fixed on the outer face of the pipe section by a change in the tensioning length of the tensioning element. Preferably, the stop element or the stop elements extend through the sleeve body as far as the outside of the pipe section. The tensioning length of the tensioning element is preferably shortened by the action of the tensioning device on the sleeve body, wherein the sleeve body is pressed against the tensioning element lying around the outer circumference of the sleeve body.

In a preferred embodiment, the stop element is designed as a pin which is designed to pass through a material region of the sleeve body when the tensioning element is tensioned around the outer circumference of the sleeve body, as long as the sleeve body has corresponding properties with respect to its strength.

Drawings

The invention is described in detail below with reference to the accompanying drawings according to preferred embodiments. Shown here are:

fig. 1 shows a schematic view of a pipe arrangement according to a first embodiment in cross section;

fig. 2 shows a schematic view of a pipe arrangement according to the invention according to a second embodiment in cross section;

fig. 3 shows a schematic view of a pipe arrangement according to the invention according to another embodiment in cross section;

fig. 4 shows a schematic view of a pipe arrangement according to the invention according to another embodiment in cross section;

fig. 5 shows a view of an embodiment of the apparatus according to the invention for fixing a pipe arrangement.

Detailed Description

Fig. 1 shows a pipe arrangement 1 with a sleeve body 2 having end sections 4, 4' opposite one another. In each of the end sections 4, 4 'a pipe section 6, 6' is sealingly accommodated. Sealing elements 12, 12 'are provided on the inner side 8 of the sleeve body 2 and on the outer face 10 of the respective pipe section 6, 6', respectively, by means of which sealing elements the tightness of the medium of the pipe arrangement 1 is ensured in particular. Furthermore, a connecting medium 14, 14 'is provided between the inner side 8 of the sleeve body 2 and the outer side 10 of the pipe sections 6, 6'. By means of the connecting media 14, 14 ', the pipe sections 6, 6' are each locked relative to the sleeve body 2.

In one embodiment, the connecting medium 14, 14 'is designed to seal the inner side 8 of the sleeve body 2 against the outer side 10 of the pipe section 6, 6', in addition to the pipe section being stopped against the sleeve body. The connection means 14, 14' are brought or converted by activation from a transport and/or storage state into a connection state in order to bring about a connection between the inner side 8 and the outer side 10.

In one possible embodiment, the connection means 14, 14 'are designed as an adhesive applied to the inner side 8 of the sleeve body 2 and/or to the outer side 10 of the pipe sections 6, 6' or as a weldable plastic applied thereto. In the embodiment shown in fig. 1, the connection means 14, 14 'are arranged at a distance from the end of the respective pipe section 6, 6', which is greater than the distance of the sealing element 12, 12 'from the end of the respective pipe section 6, 6'. Furthermore, a heat insulation 16 is provided, which is arranged on the outer surface 18 of the sleeve body 2.

Fig. 2 shows a second embodiment of a pipe arrangement 1 'according to the invention, which likewise comprises a sleeve body 2 and pipe sections 6, 6' accommodated therein at the end faces. The end sections 4, 4' of the sleeve body 2 are arranged coaxially in the present embodiment. In a further embodiment, the sleeve body can also be bent such that the center axes of the end sections 4, 4' extend at an angle of between 1 ° and 90 ° toward one another.

In a preferred embodiment, the sleeve body can also be designed as a T-connector or as an X-connector, wherein the T-connector in particular has three end sections for receiving the respective pipe ends and the X-connector has four end sections which extend at an angle to one another for receiving the pipe sections.

In contrast to the embodiment according to fig. 1, the connecting means 14, 14 'are arranged at a distance from the end of the respective pipe section 6, 6', which is smaller than the distance of the sealing element 12, 12 'from the respective end of the pipe section 6, 6'. The connecting medium 14, 14 ' is thus arranged upstream of the sealing element 12, 12 ' in the insertion direction of the pipe section 6, 6 '. In the present embodiment, the sleeve body is not enclosed by insulation, however this is possible in one embodiment.

The connecting means 14, 14 'shown in fig. 2 can also be transferred from the transport and/or storage state into the connecting state by corresponding activation, so that the inner side 8 of the sleeve body 2 is connected to the outer side 10 of the pipe section 6, 6'. The connecting medium 14, 14 ' in fig. 2, although not shown in detail, can have a through-passage running in the axial direction, so that the fluid flowing through the pipe section, in particular the extinguishing fluid, comes into contact with a sealing element 12, 12 ' which is arranged downstream of the connecting medium 14, 14 ' in the outflow direction of the extinguishing fluid between the outer face 10 and the inner face 8.

As can be seen from fig. 1 and 2, the sealing elements 12, 12 'are each arranged in a groove-like recess 20 at the outer face 10 of the pipe sections 6, 6'. The connecting media 14, 14 'can also be accommodated, for example, in similar recesses at regions such as the outer face 10 of the pipe section and/or the inner side 8 of the sleeve body 2'. In one embodiment of the invention, the connecting means 14, 14 'is a two-component adhesive, wherein the first component is applied to the outer face 10 of the respective tube section 6, 6' and the second component is applied to the inner face 8 of the sleeve body 2.

Furthermore, in order to activate the connecting means as adhesive, the connecting means in the transport and/or storage state can be covered by a removable protective layer 15, which can be removed simply to activate the connecting means. The removal of the protective layer 15 can take place before the pipe sections 6, 6' are inserted into the sleeve body 2 or only after the pipe sections are inserted into the sleeve body 2. Alternatively, when weldable plastic is used as the connecting medium, heat acts on the associated region of the sleeve body 2. In the embodiment shown in fig. 2, a stop element 32, which interacts with a section of the sleeve body 2 and engages in relation to the outer face 10 of the pipe section 6, 6 ' in a groove 34, 34 ' embodied as an annular groove on the inner side 8 of the sleeve body 2, is provided on each pipe section 6, 6 '.

Fig. 3 shows a further embodiment of a pipe arrangement 1 "according to the invention, which comprises a sleeve body 2'. The end faces of the sleeve body 2 'are likewise inserted with the pipe ends 6, 6'. The sleeve body 2' has a stop 22, which is formed approximately in the middle in the longitudinal direction of the sleeve body. The stop 22 is a material collar 24 projecting on the inner side 8 of the sleeve body 2' in the form of a shoulder on the inner side 8 of the sleeve body. The insertion depth of the pipe sections 6, 6' is limited via the stop 22.

Groove-

like recesses

20, 26 are provided on the outer side of the pipe sections 6, 6' and on the inner side 8 of the sleeve body 2. By means of the

recesses

20, 26, in particular, receiving spaces 28, 28 ' for the sealing elements 12, 12 ' and the connecting media 14, 14 ' are formed. In the embodiment shown in fig. 3, the sleeve body 2 'has an opening 30 through the wall of the sleeve body in the region of the recess 26 forming the receiving space 28, 28' for the connecting medium. The connecting means 14, 14 'can be introduced into the receiving spaces 28, 28' after the assembly of the pipe arrangement 1 ″ via the opening 30.

Fig. 4 shows a further embodiment of a pipe arrangement 1 ' ″ according to the invention, which has a sleeve body 2 ″ into which two pipe sections 6, 6 ' are each pushed at the end face in an end section 4, 4 ' of the sleeve body. The inner side 8 of the sleeve body 2 ″ then comes to bear at least partially against the outer face 10 of the respective pipe section 6, 6'. In contrast to the previous embodiments, the sleeve body 2 ″ has a centrally arranged sealing element 12 ″ which simultaneously seals off from the two ends 13 of the pipe sections 6, 6'. After the insertion of the pipe section into the sleeve body 2 ″, the connection medium 14, 14 'between the inner side 8 of the sleeve body 2 ″ and the outer side 10 of the pipe section 6, 6' is activated.

In order to avoid axial displacement of the pipe section 6, 6 'relative to the sleeve body 2 ″ or twisting of the pipe section in the sleeve body 2 ″ in the circumferential direction, the pipe section 6, 6' and the sleeve body 2 ″ are fixed relative to one another during the at least partially material-fitting connection between the sleeve body and the pipe section.

As is shown in fig. 4, the sleeve body 2 ″ can be fixed relative to the pipe sections 6, 6' by means of one or more stop elements 42. In one embodiment, the sleeve body 2 ″ can have a material strength (materialistickeit) which is at least partially penetrated in the thickness direction by the pin-like latching element 42. The stop element 42 is then preferably directly operatively connected to the outer face 10 of the pipe section 6, 6'. In one embodiment of the invention, the sleeve body 2 ″ can also have a preformed groove in its wall surface, extending in the thickness direction, for the passage of the stop element 42.

Fig. 5 shows a possible embodiment of a fastening device 40 used, which has at least one tensioning element 44 that can be laid around the outer circumference of the sleeve body 2 ″ and on which a plurality of stop elements 42 are arranged at predetermined distances along the tensioning element. The fastening device 40 also comprises an adjustable tensioning device 46 having a movably mounted tensioning pin 48 which, starting from one side, exerts a pressure force on the sleeve body 2 ″ wound by the tensioning element. The sleeve body 2 ″ is thereby pressed against the stop element 42 of the tensioning element 44. The tensioning pin 48 is moved by means of a drive unit, not shown in detail, for example an adjustable piston.

Instead of the fixing device 31 described above, a type of locking pliers can also be used for fixing the pipe sections 6, 6' and the sleeve body relative to one another. By means of the locking pliers, a clamping force is preferably generated which acts on the inside of the pipe section 6, 6' and the approximately opposite outside of the sleeve body 2 ″, by means of which the region of the inside of the sleeve body and the outside of the respective pipe section are fastened by means of the acting surface pressure.

List of reference numerals

1, 1' pipe arrangement

2, 2' sleeve body

4, 4' end section

6, 6' pipe section

8 inner side

10 outer face

12, 12' sealing element

13 end part

14, 14' connecting medium

15 protective layer

16 heat insulation part

18 outside

20, 20' concave part

22 stop

24 material flange

26 recess

28, 28' receiving space

30 opening

32 stop element

34, 34' groove

40 securing device

42 stop member

44 tensioning element

46 tensioning device

48 tensioning pin

Claims

1. A pipe arrangement (1, 1 ', 1 ", 1"') of a pipe system of a fire-extinguishing installation with pipe sections connected to each other, which pipe arrangement guides a medium, having:

a sleeve body having at least one first end section (4) and a second end section (4');

two conduit sections (6, 6 '), wherein each conduit section (6, 6 ') is accommodated at an end section (4, 4 ') of the sleeve body,

a sealing element (12, 12 ') arranged between the inner side (8) of the sleeve body and the outer side (10) of the pipe section (6, 6'),

provided with a connecting medium (14, 14 ') arranged between the inner side of the sleeve body and the outer side of the pipe section (6, 6'),

wherein the connection means (14, 14 ') has a transport and/or storage state in which a relative movement between the pipe section (6, 6 ') and the sleeve body is possible and which can be brought from the transport and/or storage state into a connection state by means of activation, wherein the connection means (14, 14 ') are designed in the connection state to connect the outer face (10) of the respective pipe end to the inner face (8) of the sleeve body in a material-fitting manner,

characterized in that the connection medium (14, 14 ') is provided for forming a welded connection between the sleeve body and the pipe section (6, 6') by means of activation, wherein the connection medium (14, 14 ') is a weldable plastic applied to the inner side of the sleeve body and/or to the outer side of the pipe section (6, 6').

2. The pipe arrangement (1, 1 ', 1 ", 1"') according to claim 1,

characterized in that a section of the conically tapering connection surface is provided on the inner side of the sleeve body and on the outer side of the pipe sections (6, 6').

3. The pipe arrangement (1, 1 ', 1 ", 1"') according to claim 1 or 2,

characterized in that the connecting means (14, 14') are covered by a removable protective layer (15), wherein the protective layer is designed to protect the connecting means in the transport and/or storage state from external influences.

4. The pipe apparatus according to claim 3,

wherein the protective layer is designed as a protective film which completely surrounds the connection medium, wherein the protective film is designed to be removed from the connection medium when the pipe section has been pushed into the end section of the sleeve body.

5. The pipe apparatus according to claim 3,

wherein the protective layer that can be removed is at least one of:

-being gas-tight and,

of splash-proof, or

A protective layer impermeable to UV radiation.

6. The pipe arrangement (1, 1 ', 1 ", 1"'),

characterized in that the sealing element (12, 12 ') is arranged in a recess (20, 20 ') on the inner side (8) of the sleeve body and/or on the outer face (10) of the pipe section (6, 6 ').

7. The pipe arrangement (1, 1 ', 1 ", 1"'),

the pipe arrangement further has a stop element for axially positioning the pipe section (6, 6') relative to the sleeve body.

8. The pipe arrangement (1, 1 ', 1 ", 1"'),

characterized in that the sleeve body has at least one stop (22) for a pipe section (6, 6') which has been pushed into the sleeve body, said stop being designed as a radially inwardly projecting shoulder on the inside (8) of the sleeve body.

9. The pipe arrangement (1, 1 ', 1 ", 1"') according to claim 1 or 2,

characterized in that the connection region formed by means of the connection medium (14, 14 ') has a distance from the respective end of the pipe section (6, 6') which is greater than the distance of the sealing element (12, 12 ', 12 ") from the end of the pipe section (6, 6').

10. The pipe arrangement (1, 1 ', 1 ", 1"'),

characterized in that the connection region formed by means of the connection medium (14, 14 ') has a distance from the respective end of the pipe section (6, 6') which is smaller than the distance of the sealing element (12, 12 ') from the end of the pipe section (6, 6').

11. The pipe arrangement (1, 1 ', 1 ", 1"') according to claim 1 or 2,

characterized in that the connecting medium has cooling channels extending substantially in the axial direction in the circumferential direction of the pipe sections (6, 6').

12. The pipe arrangement (1, 1 ', 1 ", 1"'),

it is characterized in that a heat insulation part is arranged on the outer surface of the sleeve body.

13. A fire-extinguishing system having a pipe system consisting of a plurality of medium-conducting pipes connected to one another in a flow-conducting manner, wherein the connection region of at least two pipes connected to one another is formed by means of a pipe arrangement (1, 1 ', 1 ", 1"') according to any one of claims 1 to 12.

14. A pipe connection for a pipe arrangement (1, 1 ', 1 ", 1"') of a pipe system of a fire-extinguishing installation, which pipe arrangement has medium-conducting pipe sections connected to one another, wherein the pipe connection has:

-a sleeve body having a first end section (4) for accommodating a first pipe section of the pipe arrangement and a second end section (4') for accommodating a second pipe section of the pipe arrangement,

-wherein the sleeve body has an inner side (8),

it is characterized in that the preparation method is characterized in that,

-a connecting medium (14, 14') is arranged on the inner side (8) of the sleeve body, said connecting medium being designed for connection to the outside of the respective pipe section, wherein

-the connecting medium (14, 14 ') has a transport and/or storage state in which a relative movement between the pipe section (6, 6') and the sleeve body is possible,

-a weldable plastic coating on the inside of the sleeve body and/or the outside of the pipe section (6, 6'), and

-the connecting means (14, 14 ') are designed to be transferred from the transport and/or storage state into a connecting state by means of activation, in which the connecting means (14, 14 ') connect the outer face (10) of the respective pipe section to the inner face (8) of the sleeve body in a material-fit manner, and to form a welded connection between the sleeve body and the pipe section (6, 6 ').

15. The pipe coupling according to claim 14,

characterized in that a sealing element (12, 12', 12 ") is arranged on the inner side.

16. A method for producing a line arrangement (1, 1') of two lines to be connected to each other of a line system of a fire-extinguishing installation,

wherein the line arrangement is constructed according to any one of claims 1 to 15, the method having the following steps:

-providing at least one pipe section and a sleeve body for receiving the pipe section (6, 6') in sections,

-engaging the pipe section (6, 6') with the sleeve body,

-before or after the joining, activating a connecting medium (14, 14 '), which is a weldable plastic material, arranged on the inner side (8) of the sleeve body and/or on the outer side (10) of the pipe section (6, 6 '), and which is applied to the inner side of the sleeve body and/or on the outer side of the pipe section (6, 6 '), and converting the connecting medium (14, 14 ') from a transport and/or storage state into a connecting state, and forming a welded connection between the sleeve body and the pipe section (6, 6 '), such that the inner side of the sleeve body and the outer side of the pipe section (6, 6 ') are connected at least partially by means of the activated connecting medium (14, 14 ') in a material-fitting manner.

17. The method according to claim 16, comprising the steps of:

-after engagement of the pipe section (6, 6 ') with the sleeve body, fixing the pipe section (6, 6 ') and the sleeve body relative to each other until an at least partially material-fit connection between the inside of the sleeve body and the outside of the pipe section (6, 6 ') occurs.

18. A system for pipe installation with a pipe connector according to claim 14 and a device for fixing at least one pipe section (6, 6 ') and a sleeve body of the pipe connector to be connected with the pipe section, the device having at least one fixing mechanism acting on the pipe section (6, 6 ') and the sleeve body, the fixing mechanism being designed to fasten the pipe section (6, 6 ') and the sleeve body to one another at least temporarily in the axial direction and/or in the circumferential direction of their inner and outer faces towards one another,

characterized in that the fastening device has a tensioning element (44) which can be laid around the outer circumference of the sleeve body, wherein a tensioning device (46) which can vary the tensioning length of the tensioning element is associated with the tensioning element (44), and wherein at least one stop element (42) is provided along the tensioning element (44), which stop element penetrates the sleeve body at least in sections in the thickness direction as the tensioning device (46) is tensioned and acts on the outside of the pipe section (6, 6').

19. The system as set forth in claim 18, wherein,

characterized in that the fastening means is designed as a clamping device which is designed to apply a clamping force to an outer face of the sleeve body and to an inner face of the pipe section (6, 6 ') which is arranged substantially congruent to the outer face of the sleeve body or to outer faces of the sleeve body which are opposite one another, in such a way that a surface pressure is generated in at least one contact region between the inner face of the sleeve body and the outer face of the pipe section (6, 6').

20. The system as set forth in claim 18, wherein,

characterized in that the tensioning element (44) is a tensioning chain.